Robert Holwerda, DO
NPI 1205995735 · Psychiatry Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Holwerda, DO is a Psychiatry Physician provider in Grand Rapids, MI (NPI 1205995735).
Provider details
- NPI number
- 1205995735
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5101009935 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 5060 Cascade Rd SeSuite DGrand Rapids, MI 49546Phone: (616) 454-2911Fax: (616) 454-1126
Registry dates
- Enumerated
- 2006-12-08
- Last updated
- 2022-03-29
- Certified
- 2022-03-29
Frequently asked questions
- What is Robert Holwerda's NPI number?
- Robert Holwerda's National Provider Identifier (NPI) is 1205995735, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Holwerda's specialty?
- Robert Holwerda is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Holwerda located?
- Robert Holwerda's practice location on file with NPPES is 790 Fuller Ave Ne, Grand Rapids, MI 49503-1918.
- What is Robert Holwerda's phone number?
- The practice phone number listed in the NPPES registry for Robert Holwerda is (616) 336-3909.
- Does Robert Holwerda accept Medicare?
- Robert Holwerda is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Holwerda's NPI active?
- Yes — Robert Holwerda's NPI (1205995735) is active in the NPPES registry as of the last update on 2022-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.